The global shift towards clean energy mandates rapid, reliable infrastructure that standard, mega-scale LNG complexes cannot easily offer. Remote gas deposits, shale gas, coalbed methane (CBM), and marginal associated gas wells are frequently flared or left unexploited due to pipeline connectivity limitations. This dynamic requires Skid-Mounted and Truck-Mounted Liquefied Natural Gas (LNG) plants that act as mobile energy processing hubs.
As pioneers in thermodynamic processing and environmental engineering, we engineer fully integrated, compact gas processing facilities. These transportable systems handle every stage of natural gas optimization locally: from initial raw feed gas extraction, through deep deacidification and dehydration, to sub-cool liquefaction and BOG (Boil-Off Gas) recovery. By transforming stranded natural gas resources directly at the wellhead, industrial operators reduce flaring emissions, secure valuable chemical by-products like helium, and fast-track pipeline-quality LNG supply chains without lengthy civil work pipelines.
Established in June 2021, with a registered capital of 78 million yuan, Hebei Hongke Qingneng Environmental Protection Equipment Co., Ltd. operates from its design and manufacturing headquarters located in the industrial base of Sanhe Economic Development Zone, Langfang City. We are a specialized, technology-driven enterprise focusing on the research, development, and high-precision production of environmental protection systems, industrial refrigeration, non-standard pressure vessels, and modular gas recovery technologies.
Our core R&D program benefits from collaboration with academic talent from Tsinghua University and the Institute of Physics and Chemistry Technology, Chinese Academy of Sciences (CAS). We hold numerous independent patents in skid-mounted gas liquefaction and low-temperature thermal management systems, delivering field-tested technology across critical gas recovery sites in China.
We operate with national and global design clearances, holding the A2 Level Pressure Vessel Manufacturing License, Pressure Pipeline Component Manufacturing License, GB/T19001-2016 Quality Management Certification, and Sinopec HSSE / CNPC Health, Safety and Environment Management approvals. We are officially recognized as a Langfang Municipal R&D Platform.
Our skid-mounted recovery solutions directly target the reduction of air pollution by capturing associated flare gas, optimizing coalbed methane, and processing VOC exhaust emissions. Our custom designs help global industrial partners meet decarbonization targets, lower greenhouse gas output, and achieve reliable, localized resource circularity.
Our technologies are overseen by academic researchers and cryogenic engineers from the Chinese Academy of Sciences (CAS) and other institutions. This specialized oversight ensures that every thermodynamic module, phase-change calculation, and pressure vessel configuration meets rigid performance metrics.
Founder & Chairman
Dr. Sun obtained his doctorate from the Institute of Physics and Chemistry Technology, Chinese Academy of Sciences, and holds the title of National Senior Engineer. He has directed several national research programs (including the National 863 Program and major NSFC projects). Under his leadership, the company has developed over 20 proprietary intellectual property patents, deploying small skid-mounted liquefaction systems for remote operations.
General Manager
Dr. Zou is a Senior Engineer associated with the Institute of Physics and Chemistry Technology (CAS) and currently manages our international business divisions and commercial development. His work includes research contributions to national energy programs, publishing 24 domestic and international academic papers (11 indexed in SCI/EI). He has secured five invention patents, steering the commercialization of our portable waste treatment and gas systems.
Chief Engineer
Earning his doctorate in Engineering at the Institute of Physics and Chemistry Technology (CAS), Dr. Cheng developed the technical specifications for our modular, multi-specification natural gas liquefaction systems. His research centers on phase change heat transfer characteristics and flow properties of multi-component mixed working mediums, translating theoretical thermodynamics into operational modular equipment.
Skid-mounted and truck-mounted natural gas liquefaction demands optimized process controls, low weight profiles, and safe operations under fluctuating feed gas volumes. Traditional large-scale plants rely on complex cascade refrigeration systems. In contrast, our mobile plants employ optimized cryogenic thermodynamic process routes tailored for varying gas volumes and local logistics:
For installations looking to balance CAPEX with physical foot-print requirements, the SMR cycle uses a multi-component mixture of nitrogen and light hydrocarbons (methane, ethane, propane, butane). This mixture undergoes vaporization through a single multi-passage brazed aluminum plate-fin heat exchanger (BAHX), matching the natural gas cooling curve to minimize entropy losses. The SMR unit is consolidated onto structural skids, allowing it to be easily transported by flatbed trucks for rapid on-site hookup.
For associated gas wells located in remote, logistics-constrained locations or where refrigerant storage is restricted, the Nitrogen Expansion cycle offers a clean, self-contained solution. Utilizing nitrogen gas from the atmosphere as the working medium, this cycle avoids storing flammable hydrocarbons on-site, offering straightforward operations and startup/shutdown procedures suitable for intermittent gas supply profiles.
Before liquefaction, natural gas requires rigorous treatment to prevent freeze-outs in the cryogenic cold box. Our skid-mounted pre-purification systems incorporate:
• Acid Gas Removal (Deacidification): High-efficiency MDEA amine wash columns to reduce CO2 content to under 50 ppm.
• Molecular Sieve Dehydration: Dual-tower adsorption beds drying gas down to dew points of -70°C (H2O < 1 ppm).
• Heavy Hydrocarbon & Mercury Polishers: Activated carbon and specialized media filters to prevent mercury embrittlement in aluminum heat exchangers.
A major design factor for modern LNG projects is managing BOG during liquefaction and product storage. Our skid-mounted recovery platforms integrate cryogenic helium separation units. Crude helium, concentrated from the BOG stream, is purified through multi-stage cold traps, producing liquid helium. This process enables operators to recover high-value helium gas from natural gas fields, generating secondary revenue streams.
Registered Capital (RMB)
Pressure Vessel Manufacturing License
Skid-Mounted Units Delivered Globally
Patent-Backed Environmental Technologies
Procuring small-scale, mobile, and modular LNG liquefaction plants involves navigating transport regulations, fluctuating feed gas compositions, and strict local compliance requirements. Engineering, Procurement, and Construction (EPC) groups, along with oilfield service providers, require modular systems that minimize expensive, on-site mechanical and civil engineering work. The main application cases include:
Capturing associated natural gas from remote crude oil production wells to eliminate flaring, meet local environmental mandates, and convert waste gas into transportable, commercial-grade fuel.
Capturing low-pressure coal mine gas and vacuum-pumped methane, processing it through custom purification beds, and liquefying it to supply local distribution channels.
Temporary installations at shale exploration wells to monetize testing-phase natural gas prior to pipeline integration, with the capability to easily dismantle and relocate the equipment.
Our solutions have been implemented across diverse energy operations, medical facilities, and animal tissue processing sites. Below are key projects delivered under our technical standards:
Laboratory Animal Residue Harmless Treatment System
Mobile Medical Waste Disposal Steam System
M3/d Wellhead Gas Liquefaction Project
Centralized Medical Waste High-Temp Steam Unit
Skid-mounted LNG plants are modular systems constructed on structural steel bases at the factory, minimizing on-site construction, welding, and system integration. This design reduces project execution timelines by 40-60% and allows units to be disassembled and relocated when feed gas wells are depleted. This versatility makes them highly suitable for associated oilfield gas recovery, CBM projects, and remote, stranded wells.
The Single Mixed Refrigerant (SMR) cycle matches the natural gas cooling curve, providing high thermodynamic efficiency and lower electrical energy consumption per kilogram of liquefied LNG. However, it requires storing hydrocarbon mixtures on-site. The Nitrogen Expansion cycle uses non-flammable nitrogen gas from the air, offering simplified operations, enhanced safety, and fast startup times, though it has slightly lower thermodynamic efficiency.
Our plants are designed and manufactured in compliance with international codes. We hold China's A2 Level pressure vessel design and fabrication licenses, and our systems can be configured to comply with ASME Section VIII, CE-PED directives, and AD2000 guidelines, enabling deployment across North American, European, and Middle Eastern operating environments.
Our feed gas purification skids are engineered to handle high levels of H2S, CO2, water vapor, and heavy hydrocarbons. They clean gas to meet pipeline and cryogenic specifications: CO2 < 50 ppm, H2O < 1 ppm, H2S < 4 ppm, and heavy hydrocarbons (C6+) down to trace levels. This protects the cold box components from freezing or clogging during long-term operations.
Yes, we design and integrate cryogenic helium extraction units into our LNG plants. When processing gas with high helium concentrations, our systems separate and concentrate helium from the BOG stream, allowing operators to recover high-value liquid or gaseous helium as an additional revenue source.
Are you looking to capture stranded associated gas, optimize a coalbed methane recovery project, or deploy a localized modular LNG plant? Our CAS-backed engineering team can design custom solutions tailored to your feed gas composition, geographic location, and transport limits.
Contact Hebei Hongke Qingneng Environmental Protection Equipment Co., Ltd. for design parameters, process models, and equipment pricing for your project.
Please outline your project specifications, gas flow rates, gas composition, and target compliance codes (ASME, CE, GB). Our team will review your requirements and respond within 24 hours.
Hongke Qingneng